Is there an indicator that helps to calculate percentage bullish or bearish when trading, i.e that i will put on my platform to indicate it in percentage any time i'm trading? pls tell me the indicator. Thanks

None of us is aware of such indicator. We are sorry. If anyone knows, please help by leaving a comment below. Thank you.

I have seen different stochastics with different properties like: 9 3 3; 10 3 3; 5 3 3; 6 3 3 etc. pls which property can i use bcos i want to combine stochastic with pivot points on my trading platform using 15 minutes time frame.

For 15 min charts the best choice would be to use Stochastic 5, 3, 3.

Where do i go to learn how to efficiently use Forex indicators like MACD, Fibonacci Retracement, Arcs, trend lines and other important indicators to be able to predict the market movement more carefully.

There are many good resources online.
For example, you may read about trading with MACD at http://forex-indicators.net/macd

There is a well known resource of good Forex strategies based on different indicators, where you may learn how to apply indicators on practice: http://forex-strategies-revealed.com/simple

Fibonacci trading can be learned, for example, from Forex e-book at http://www.fibonaccibook.com/
There as well you can find a book on trend lines trading: http://www.trendlinebook.com/

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